SAN FRANCISCO — Willy Adames touched home twice by his own accord and was the first person to meet Christian Koss as he dove across the plate.

The Giants’ shortstop homered twice, drove in three runs and made a mad dash from the dugout railing as soon as it became clear Koss would score from second base on Jung Hoo Lee’s walkoff line drive single into right field that secured a three-game sweep over the Chicago Cubs, 4-3, on Thursday afternoon.

The walk-off win gave the suddenly red-hot Giants their fifth win in a row while securing their fifth series sweep of the season. They had been on the wrong side of five series sweeps since they last broke out the brooms against the Braves during the first week of June.

A day after Rafael Devers acted as a one-man offensive force , it was A

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